Description

The ProtEX-MAX™ PD8-6262 offers all the functionality of the ProVu PD6262 as a fully FM, CSA, ATEX, and IECEx approved explosion-proof product. It is specifically designed to display flow rate and total from two (2) analog output (4-20 mA, 0-5 V, 1-5 V, etc.) flowmeters. It displays these signals on a dual-line, 6-digit Sunbright sunlight readable display. The two display lines can be used to show both flow rates simultaneously, to alternate between the two inputs showing both the flow rate and total of each, or to show the result of math functions performed on the flow rates and totals. The total overflow feature allows up to 9-digit totals and grand totals to be displayed. The PD8-6262 includes a 24 VDC power supply to drive the flowmeter and can be equipped with up to four internal relays and a 4-20 mA analog output. It can be programmed and operated without opening the housing by using the built-in SafeTouch® through-glass buttons or the RS485 serial communication port with free Modbus® protocol.

Dual Rate/Totalizer

Rate Display Indication: 0 to 999999, lead zero blanking.Total Display & Total Overflow: 0 to 999,999; automatic lead zero blanking. Up to 999,999,999 with total-overflow feature. “oF” is displayed to the left of total overflow.Total Decimal Point: Up to five decimal places or none: d.ddddd, dd.dddd, ddd.ddd, dddd.dd, ddddd.d, or dddddd. Total decimal point is independent of rate decimal point. Channel A and B decimal points programmed independently.Dual Totalizer: Calculates total for channels A and B based on rate and field programmable multiplier to display total in engineering units. Time base must be selected according to the time units in which the rate is displayed. Channel A and B totalizer parameters programmed independently.Totalizer Rollover: Totalizer rolls over when display exceeds 999,999,999. Relay status reflects the display value.Total Overflow Override: Program total A or B total reset for automatic with 0.1 second delay and set point 1 for 999,999Totalizer Alarm Presets: Up to eight, user selectable under setup menu. Any set point can be assigned to channel A or B total or grand total (or C) and may be programmed anywhere in the range of the meter for total alarm indication.Total & Grand Total Reset: Via front panel button, external contact closure on digital inputs, automatically via user selectable preset value and time delay, or through serial communications. Channel A and B total and grand total reset parameters programmed independently.Total Reset Password: Total and grand total passwords may be entered to prevent resetting the total or grand total from the front panel.Non-Resettable Total: The grand totals can be programmed as non-resettable totals by entering the password “050873”. Both channels are set to non-resettable when this password is entered. Caution: Once the Grand Total has been programmed as “non-resettable” the feature cannot be disabled.Programmable Delay on Release: 0.1 and 999.9 seconds; applied to the first relay assigned to total or grand total. If the meter is programmed to reset total to zero automatically when the preset is reached, then a delay will occur before the total is reset.

Automatic reset only (non-latching), when input passes the reset point.

Automatic + manual reset at any time (non-latching).

Manual reset only, at any time (latching).

Manual reset only after alarm condition has cleared (latching).

Note: Front panel button or digital input may be assigned to acknowledge relays programmed for manual reset.Time Delay: 0 to 999.9 seconds, on & off relay time delays. Programmable and independent for each relay.Fail-Safe Operation: Programmable and independent for each relay.Note: Relay coil is energized in non-alarm condition. In case of power failure, relay will go to alarm state.Auto Initialization: When power is applied to the meter, relays will reflect the state of the input to the meter.

Applications

Differential Pressure Flow (PD6262)

The PD8-6262 can display flow rate and total by extracting the square root from the 4-20 mA signal from differential pressure transmitters. The user selectable low-flow cutoff feature gives a reading of zero when the flow rates drop below a user selectable value.

Display Flow Rate

User Selectable Low-Flow Cutoff

Only 2 Calibration Points Required

Open Channel Flow (PD6262)

The PD8-6262, in combination with ultrasonic level transmitters, makes for an easy and convenient way to measure and display open channel flow rates and totals in most weirs and flumes, and take periodic samples. All the user needs to do is enter the exponents for the weirs or flumes into the PD8-6262 and the PD8-6262 automatically raises the input signals to those powers. Sampling can be based on the total flow or the flow rate. Each channel’s signal input conditioning is programmed independently.

Weir Flow Calculated Using Exponential Signal Input Conditioning

Convert Pulse to 4-20 mA (PD6363)

The PD8-6363 accepts pulse outputs from flowmeters and with the appropriate option installed, can convert the pulses to a 4-20 mA signal. The 4-20 mA signal can be programmed to correspond to either the flow rate or the total flow.

Use K-Factor or Multi-Point Scaling

ProVu Powers the Flowmeter

Up to 3 Analog Outputs

MeterView® Pro Software

MeterView® Pro software is designed for use with ProVu, ProtEX-MAX, or Helios Series meters and allows users to remotely program, monitor, and datalog using a PC. Remote programming allows for all available meter settings to be programmed through an easy, user-friendly interface. The data acquisition feature allows the user to gather readings from a meter at user-selected intervals and generate charts using common tools like Microsoft® Excel. A linearization setup function is also included. With this utility the user can configure up to 32 linearization points and upload them to the meter. All configuration data can be saved to a file for future use. This software is accessible via the onboard USB connection on all Helios large display meters, ProVu panel meters, and ProVu-based ProtEX-MAX explosion-proof meters produced since 6 September 2016 (firmware version 4.0 or higher). In order for meters produced prior to 6 September 2016 (firmware version 3.1 or lower) to establish digital communications with a PC, a serial communications adapter is required. For an RS-232 connection, use a PDA1232 adapter.To determine the software version of a meter:

Go to the Diagnostics menu () and press Enter button.

Press Up arrow button and scroll to Information menu (Info).

Press Enter to access the software number (), version (), and serial number () information. Write down the information as it is displayed. Continue pressing Enter until all the information is displayed.